[1]WANG Wenying,YIN Qingbo,LU Mingyu.Enhancement method for angiogram blood vessel imagesbased on directional filter banks[J].CAAI Transactions on Intelligent Systems,2016,11(1):111-116.[doi:10.11992/tis.201507024]
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Enhancement method for angiogram blood vessel imagesbased on directional filter banks

CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume: 11 Number of periods: 2016 1 Page number: 111-116 Column: 学术论文—机器感知与模式识别 Public date: 2016-02-25
Title:
Enhancement method for angiogram blood vessel imagesbased on directional filter banks
Author(s):
WANG Wenying;  YIN Qingbo;  LU Mingyu
Information Science and Technology, Dalian Maritime University, Dalian 116026, China
Keywords:
coronary angiography; enhanced images; vessel enhancement; directional filter bank; directional gradient; Hessian matrix
CLC:
TP391.41
DOI:
10.11992/tis.201507024
Abstract:
To facilitate the examination of coronary angiogram images and to more accurately analyze patient illnesses with respect to the directivity characteristics of blood vessels in these images, this study proposes a novel image synthesis method for filters with no sampling direction based on directional exponent weighting. The proposed approach incorporates the presentation of line-like directional features in an image extracted by filters with no sampling direction. To achieve coronary angiogram image enhancement, we first use no-sampling-direction filters to decompose the angiogram image into several directions, then we employ the Hessain matrix method for each directional image to enhance the image. Finally, all enhanced directional images are combined to generate the enhanced image. Compared with the traditional synthesis achieved by simply summing directional images, the proposed new synthesis method that is based on the weight of every direction makes better use of the directional feature of blood vessels and enhances the weight of the main direction. Experimental results show that a more complete blood vessel tree can be acquired and a better enhancement effect can be achieved by the proposed method when compared with conventional blood vessel enhancement method.
References:
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